Battery storage paired with 37% of new US residential solar in 2025

· Energy · United States

Battery storage was paired with 37% of new US residential solar installations in 2025, up from 25% a year earlier. Adoption is accelerating both in California and across other states.

Why it matters：Rising attachment rates signal that storage is becoming a standard part of residential solar economics, shifting demand toward batteries and changing how installers and utilities plan for rooftop generation.

Key points

  • The attachment rate rose from 25% to 37% year over year.
  • California remains a major driver of the increase.
  • Adoption is also accelerating in other states.

Sources (original reporting)

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